Sharpening device.



No. 753,630. PATBNTED MAR. 1, 1904.

F. S. RICH.

SHARPENING DEVICE.

APPLIOATION FILED AUG. 2a. 1903.

N0 MODEL. [q

FREDERICK S. RICH,

Patented March 1, 1904.

PATENT OFFICE.

OF CANTON, OHIO.

SHARPENIANG DEVICE.

SPECIFICATION forming part of Letters Patent No. 753,630, dated March 1,1904.

Application filed August 28, 1903.

To all whom it may concern:

Be it known that LFREDERI0K S. RIor-I, a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented a new and useful Sharpening Device, of which the following is aspecification.

My invention relates particularly to devices for sharpening rotaryband-knives; and my primary object is to provide a light, portable, andcheap device of this character which may be applied to a band-cutterwhile the latter remains in the machine of which it forms a part.

The invention is illustrated in its preferred embodiment in theaccompanying drawings, in which Figure 1 is a side view of the device inconnection with a band-cutter to which it isapplied; Fig. 2, a plansection taken, as indicated, at line 2 of Fig. 1; Fig. 3, a sectiontaken, as indicated, at line 3 of Fig. 1; Figs. 4 and 5, enlargedsections taken, as indicated, at the corresponding lines of Fig. 3; andFig. 6, a view of a modified form of grinding-wheel.

A represents a bar-shaped main frame member having a perforated head; Aat one end and a bifurgated head A 'atthe'otherp end: whichfis offsetfrom the plane of the' member; A a short frame member. having at one enda bifurcated head A fitting between the bifurcations of the head A andat its other end a perforated head A B, a handle for the frame; B, acrank-wheel provided with a crank-handle B B a bolt connecting thecrank-wheel and main handle B with the head A; C, a grooved wheel fixedto the central portion of a shaft C, which passes. through the adjacentends of the frame members and has fixed on its ends grinding-wheels C Ga belt joining the wheels C and B, and D D clamping members carried by apivot D journaled in the head A The sharpener is shown applied tocutters E on the shaft E of a rotary band-cutter.

The connection at the bolt B is such that while the frame may besupported by the handle B the wheel B may turn freely on the bolt as ashaft. The connection at the bolt C is such that the-frame members mayswing freely with relation to each other, while the Serial No. 171,077.(No model.)

bolt may rotate as. a grinding wheel shaft. Fig. 4 shows a detail of theconnection between the clamping members D D and the frame member A Thepivot D is formed integrally with the member D, and the member D isfastened on the free end of the pivot by a set-screw. Removable washersa permit of lateral adjustment of the clamping members by shifting thepivot to which they are attached. This permits adjustment to compen:sate for wear at the emery wheels. Each clamping member has a channel a,parallel with the frame, and aset-screw a having a circular bearing a atits inner end. Either clamp in use serves as a support or attachingmember for the frame of the grinding device.

Rotary band -cutters are commonly provided with knives arranged a fewinches apart on the cutter-shaft. Each knife has a hub portion and ablade projecting therefrom and a having a curved cutting edge, thecurvature being for practical purposes as though struck from a centerlocated at the pivot connecting .the clamps to the frame member Aassuming one of the clamps to be secured to a knife, as shown in Fig. 1.When the device is clamped to a knife, therefore, the jointed framepermits the grinding-wheel to be moved along the edge of the blade. Byturning the crank-wheel as the grinding-wheel is thus moved rotarymotion is imparted to the grinding-wheel, thereby grinding the blade.Obviously either side of a blade may be ground, depending upon whichclamp is .connected with the particular knife.- I have shown a pair ofknives of a band-cutter with the individuals separated just far enoughto accommodate the grinder between them, a clamp being secured at eachknife. Enough play is allowed at the pivot D to permitsufiicient rackingof the frame sidewise in either direction to bring the appropriategrinding-wheel into grinding-contact with the adjacent blade. In case ofknives having a double bevel a grinding device having a singleemery-wheel with a double bevel, as shown in Fig. 6, may be employed,and the wheel may be shifted from one side to the other of the knife byraising the wheel above the point of the blade,

the play at the pivot D being suffieient to permit this action.

Changes in details of construction within the scope of my invention arecontemplated. Hence no undue limitation should be understood from theforegoing detailed description.

What I regard as my invention, and desire to secure by Letters Patent,is

1. A grinding device, comprising an attaching member, a jointed frameconnected therewith, a grinding-wheel journaled at the joint in saidframe, a wheel journaled at a distance from said grinding-wheel andserving to communicate motion thereto, and means for supporting theframe.

2. A grinding device, comprising an attaching member, a frame memberpivotally connected therewith, a frame member pivotally connected withsaid first-named frame member, a grinding-wheel journaled at the jointbetween said frame members, a driving- Wheel connected with saidgrinding-wheel, a crank-wheel connected with the free end portion ofsaid second-named frame member and geared to said driving-wheel, and ahandle for supporting said frame.

3. A grinding device, comprising a clamp, a frame member pivotallyconnected therewith, a second frame member, a grinding-wheel having ashaft serving as a pivot connecting said frame members and equipped witha drivingwheel, and a crank-wheel journaled at the free end of thesecond-named frame member, and connected with said driving-wheel.

4:. A grinding device, comprising a clamp adapted to be applied to ablade, a swinging frame member connected therewith, a grinding-wheel atelther side of the free end of said swinglng member, means for turningsaid grinding-wheel, and means for moving said swinging frame member.

5. A grinding device, comprising a clamp, a jointed frame adjustablelaterally with relation to said clamp, a grinding-wheel journaled at ajoint of said frame, driving means for said grinding-wheel, and a handlefor said frame.

6. A grinding device, comprising a clamp having a laterally-projectingpivot, a frame member journaled at one end upon said pivot, a secondframe member jointed to said firstnamed frame member, agrinding-wheelhaving a shaft journaled at the joint between said frame members andequipped with a drivingwheel, a wheel journaled at the free end of saidsecond-named frame member, a belt connecting said Wheels, means forturning the second-named wheel, and means for moving said frame, for thepurpose set forth.

7. A grinding device, comprising two clamping members, a frame memberhaving one end located between and pivotally connected withsaid'clamping members, grindingwheels journaled at the free end of saidframe member, a driving-wheel for said grinding- Wheels located betweenthe grinding-wheels, a second frame member pivotally connected with thefirst-named frame member coaxially with the grinding-wheels, acrank-wheel, a frame-handle at the free end of said secondnamed framemember, and a bolt connecting said crank-wheel and frame-handle to saidsecond-named frame member, for the purpose set forth.

FREDERICK S. RICH. In presence of- WALTER N. VVINBERG, L. HEIsLAR.

